Taconic TLX-9 PCB
Taconic TLX-9 high frequency RF PCB — Dk 2.50 ± 0.04, ultra-low loss PTFE woven-glass laminate

Overview
Taconic is the world’s largest producer of PTFE copper-clad laminates, holding the patent for uniform PTFE coating on woven glass. TLX-9 is a grade within the TLX series with a tightly controlled dielectric constant of 2.50 ± 0.04 at 10 GHz.
With ultra-low dissipation factor and low moisture absorption, TLX-9 is ideal for low-layer-count microwave designs — antennas, mixers, splitters, filters, combiners and other passive RF components. It is suitable for radar, mobile communications, test equipment and microwave transmission, and performs reliably in harsh environments (vibration, high temperature, space radiation).
Technical Data
Key Specifications — Taconic TLX-9
| Parameter | Taconic TLX-9 |
|---|---|
| Dielectric Constant (εr, 10 GHz) | 2.50 ± 0.04 |
| Dissipation Factor @1.9 GHz | 0.0012 (typical) |
| Dissipation Factor @10 GHz | 0.0017 (typical) |
| Dielectric Thickness | 0.013 – 6.35 mm (0.0025 – 0.250 in) |
| Thermal Conductivity | 0.19 W/m·K |
| Moisture Absorption | 0.02 % |
| PIM (Passive Intermodulation) | < -160 dBc |
| CTE (Z axis, 25–260 °C) | 215 ppm/°C |
| Decomposition Temp (Td, 2% / 5%) | 535 °C / 553 °C |
| Density | 2.25 g/cm³ |
| Copper Foil Options | 1/2, 1, 2 oz (17–70 µm) ED & RT |
| Flammability | UL 94 V-0 |
Dk / dielectric thickness / PIM / UL per Taconic TLX-9 page. Df @1.9/10 GHz / thermal conductivity / moisture / CTE / Td / density are added from Taconic TLX Typical Values (IPC-TM-650) — confirm exact grade & thickness availability at quotation.
Other Taconic TLX Grades
TLX-9 is one of five grades in the 2.45–2.65 Dk window. Andwin stocks and fabricates them all.

Taconic TLX-0
DK 2.45 ± 0.04

Taconic TLX-8
DK 2.55 ± 0.04

Taconic TLX-7
DK 2.60 ± 0.04

Taconic TLX-6
DK 2.65 ± 0.04
Why Taconic TLX-9
Features of Taconic TLX-9
The cost-effective member of the RO4000 family — low loss and stable Dk without the PTFE price tag.
Tightly controlled dielectric constant (±0.04) for predictable impedance.
Low dissipation factor, 0.0017 @10 GHz typical — low-loss at economy PTFE price.
< -160 dBc passive intermodulation — ideal for antennas & combiners.
0.02% absorption keeps electricals stable in humid conditions.
Patented uniform PTFE coating on woven glass — dimensionally stable.
Flammability rated, rugged & reliable for harsh environments.
Raw Material & Supplier
Taconic Corporation
World’s largest PTFE CCL manufacturer and leader in microwave laminate technology. Andwin stocks TLX-9 raw laminate and offers short lead times.
Andwin Circuits
Why Choose Us?
✓ Stock & fast
TLX-9 raw material in stock, short lead time.
✓ Since 2003
ISO 9001 / IATF 16949 certified manufacturer.
✓ TLX expertise
Experienced engineers ensure Taconic TLX quality.
✓ Mass production
Dedicated line, reasonable price at volume.
✓ Free samples
Prototype coupons available on request.
✓ Professional service
Easy, responsive communication from quote to delivery.
TLX-9 vs FR-4
Taconic TLX-9 vs Standard FR-4
| Property | Taconic TLX-9 | Standard FR-4 |
|---|---|---|
| Best use | Low-layer-count microwave / antenna | General digital & power |
| Dielectric constant | 2.50 ± 0.04 (low) | ~4.2–4.5 (varies) |
| Dissipation factor | 0.0017 @10 GHz (typical) | ~0.02 (far higher loss) |
| PIM | < -160 dBc | Poor |
| Dielectric thickness | 0.013–6.35 mm | Standard range |
| Cost | Economy PTFE (premium vs FR-4) | Economy |
Frequently Asked Questions
1.What is the dielectric constant of TLX-9?
TLX-9 has a tightly controlled dielectric constant of 2.50 ± 0.04 at 10 GHz — within the TLX 2.45–2.65 window.
2.How low is the loss of TLX-9?
Dissipation factor is low (0.0012 @1.9 GHz, 0.0017 @10 GHz typical) with PIM below -160 dBc — suitable for low-loss passive RF.
3. Which TLX grades does Andwin stock?
All five grades — TLX-0, TLX-9, TLX-8, TLX-7 and TLX-6 — are available from raw laminate stock, with dielectric thicknesses from 0.013 to 6.35 mm.
4. Can TLX-9 be processed like FR-4?
No. TLX-9 is a PTFE-based woven-glass laminate and requires a dedicated PTFE process line (special drilling, desmear and bonding). It must not be mixed with standard FR-4 production.
5.What is the typical lead time?
With TLX-9 raw material in stock at Andwin, prototype turnaround is short; exact time depends on layer count and via structure.
More from High Frequency PCB
Other Rogers & RF Materials
Ready to start your Special PCB project?
Upload your design files or contact our engineering team for a free consultation.




